Application of digital image correlation method on monitoring and warning of bridge expansion joint

doi:10.16265/j.cnki.issn1003-3033.2018.S2.032

Abstract

Abstract: In this paper, combined with average control method, digital image correlation method was introduced to monitor and warn bridge expansion joint and determine safe state of bridge. A bridge in Hebei province was selected as experiment object. CCD camera is used to record the images of bridge expansion joint. And then the images were input into the software of digital image correlation to obtain the displacements of bridge expansion joint. By use of average control method, the displacements were analyzed to determine the safe state of the bridge. The experimental results show that the method can be successfully used in monitoring bridge expansion joint without affecting the bridge's normal operation.

Key words: bridge expansion joint, digital image correlation method, displacement, monitoring, charge coupled device(CCD) camera

CLC Number:

X924.2

GAO Shaoqiang, LIU Lisheng, YANG Xinwei. Application of digital image correlation method on monitoring and warning of bridge expansion joint[J]. China Safety Science Journal, 2018, 28(S2): 171-175.

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